The sales manager also suggests that there is a possibility that some customers will never bundle. She says in some cases it might be possible to bundle and also offer each customer only the trip they prefer, a practice known as mixed bundling. You know that about 21% of your customers decline cruises because of sea sickness. At least 12% decline the casino trip saying they don't believe in gambling. As a rough estimate you initially estimate that approximately 33% of your customers will never bundle. Will mixed bundling increase profits? You must show that calculations that support your conclusion.